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SUMMARY:Thermal evolution of protoplanetary disks: from beta-cooling to de
 coupled gas and dust temperatures
DTSTART;VALUE=DATE-TIME:20200512T131000Z
DTEND;VALUE=DATE-TIME:20200512T133000Z
DTSTAMP;VALUE=DATE-TIME:20240704T115619Z
UID:indico-contribution-29@meetings.aip.de
DESCRIPTION:Speakers: Eduard Vorobyov (University of Vienna)\nThermal proc
 esses can play an important role in dynamics\, chemistry\, and dust growth
  of protoplanetary disks.  Using numerical hydrodynamics simulations in th
 e thin-disk limit\, we explore different approaches to computing the disk 
 thermal structure: a simplified beta-cooling approach\, in which the rate 
 of disk cooling is proportional to the local dynamical time\, a fiducial m
 odel with equal dust and gas temperatures calculated taking viscous heatin
 g\, irradiation\, and radiative \ncooling into account\, and also a more s
 ophisticated approach allowing for decoupled dust and gas temperatures. We
  found that the gas temperature may significantly exceed that of dust in t
 he outer regions of young protoplanetary disks. The outer envelope\, howev
 er\, shows an inverse trend with the gas temperatures dropping below that 
 of dust. Models with a constant beta-parameter fail to reproduce the disk 
 evolution with more sophisticated thermal schemes.\nWe discuss whether the
  temperature decoupling is important for the gas dynamics\,\nchemical evol
 ution\, and dust growth in young protoplanetary disks.\n\nhttps://meetings
 .aip.de/event/1/contributions/29/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/29/
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